Water marking device



July 11, 1933. w. J. PIPPERT WATER MARKING DEVICE Filed July 8, 1930 4 Sheets-Sheet 1 gnwntot, Wuus mesa- @014 r YH Q.

W. J. PIPPERT July 11, 1933.

, 1933- w. J. PIPPERT 1,918,055

WATER MARKING DEVICE Filed July 8, 1950 4 Sheets-Sheet 3 July 11 Wmus J @wvuz'r.

July 11, 1933. w. J. PIPPERT 1,918,055

WATER MARKING-DEV1CE Filed July 8, 1930 4 Sheets-Sheet 4 Patented July 11, 1933 UNITED STATES WILLIS J. PIPIERT, 0F RIDLONVILLE, MAINE WATER MARKING DEVICE Appplication filed July 8,

This invention relates to a device for impressing upon a web of paper designs or marks which may serve to identify the paper or which may serve to give the paper a distinctive character or appearance. The de- 'vice may be applied toand be used in combination with a paper making machine and may be disposed at any desired point in the machine after the pulp has left the screen or forming wire and has reached a stage at which it has taken on the form of a continuous web of paper.

In general the paper marking roll, which constitutes the subject matter of the present invention, may be positioned to operate on a moving paper web or sheet after it has been fully formed and after it has passed between the couch rolls. I prefer, however, that the paper marking roll disclosed herein, be applied to the web after the web has been formed and prior to the time it has been completely dried and preferably at a point where the web has already been subjected to some drying and before it has been completely dried.

More specifically, the paper marking roll is preferably placed and made to operate upon the web at a point between the first and last drier rolls. While the paper marking roll may cooperate with any other roll, I prefer to have it cooperate with one of the drier rolls and any desirable means may be utilized for applying the desired pressure. Best results are obtained when the roll is positioned to cooperate with the seventh or ninth drier roll from the wet end of the paper making machine.

One of the objects of the present invention is to provide an apparatus of the type described which is capable of applying marks or designs over the entire surface of the web as it passes through the machine. For that purpose the length of the roll is substantially equal to the width of the web formed in the machine. These marks or designs may be a repetition of a small unitary mark or design or they may vary as desired. For this purpose the apparatus comprises a plurality of removable marking units. All of these units bear the same mark or design or they 1930. Serial No. 466,428.

may bear different marks or designs as desired. The units are preferabl small as compared with the total area of t e marking roll and while many other arrangements will be ap arent to those skilled-in the art, in the 5 speci c construction disclosed in the present application, the units are so designed that groups of two or four of them may be disposed circumferentially of the roll, each covering an equal portion of the circumferential 00 area of the roll and the roll is further so constructed that a large number of such groups may be assembled on the roll.

Another object of the invention is to rovide an apparatus of the type described w ich while capable of applyin marks or designs to the entire surface of t e web as it passes through the machine, any one or any group of the marking elements may be removed and replaced when desired.

Other objects and advantages that flow from the present invention will be apparent to those skilled in the art after an examination of the preferred embodiment illustrated in the accompanying drawings and described in the following specification, it being understood, however, that this disclosure 1s not'to serve as a limitation upon the invention, manymodifications being apparent to thoseskilled in the art, the scope of the invention being defined in the appended claims.

In the drawings: Figure 1 is a partly sectlonal longitudinal view of the roll.

Figure 2 is a view taken on line 22 1n Fig. 4.

Figure 3 is a view taken on line 33 in Figure 4 is a sectional view on line 4-4 in Fig. 1. Figure 5 is a view of the marking element. Figure 6 shows an assembly of a. modified and preferred form of the invention.

Figure 7 shows an end view of one section 95 of the preferred form.

Figure '8 shows a longitudinal sectional view of a section.

The present invention preferably embodies as a removable paper marking element 10, a we section of closely woven, non-stretchable,

wire cloth, preferably of the type which s used in Fourdrinier paper machines, this section having vulcanized thereon a body of rubber 11, hearing the desired marks, designs or other insignia 12, and produced in accordance with the process disclosed n my latent #1,677,929. The body of rubber 11 pref erably covers the wire cloth across its entire width but is disposed centrally of the cloth lengthwise in such a manner as to provide a pair of extensions 13, at the ends thereof.

Each of the marking elements 10 is carried by a segment 14, constructed in the manner shown in the drawings, which has an arcuate outer face and having one pair of radially and downwardly projecting flanges 15 and another pair of parallel flanges 16. The marking element 10 is designed to be placed on the outer face of the segment 14 and the body of rubber 11 is substantially coextensive with the area of the outer face of the segment 14 so that the wire cloth extensions 13 are made to project downwardly along the radial sides of the segment 14. The

sides of the plate are provided with grooves 17 to receive the extensions 13 of the wire cloth and removable clamp bars 18, held by screws 19, serve to clamp the marking element 10 on the carrier element 14.

After each element 14 is assembled with its corresponding marking'element 10 by means of the clamp bars 18, as described immediate ly'above, these carrier plates are assembled on the metal roll 20 in the manner shown. The carrier plates 14 are preferably so designed that four of them may be placed and constitute a circumferential group around the outer face of the roll 20. The sides of each segment 14, as will be seen at 15 in Fig; 4 are preferably made to abut against the adjacent side of the adjacent segment- 14 and the clamp bars 18 are also so disposed that they do not project from'the end face of the segment 14. Bythis construction and arrangement the circumferential group of segments 14 with their associated marking elements 10 provide the roll with a circumferential marking face of resilient material such as rubber, the face bearing one or several designs, carried by several removable elements.

In order to properly clamp and retain the segments 14 on the roll 20, the end flanges 16 21 cooperating with a similar groove on the adjacent group of segments in order to retain these segments in position. The retaining rings 22 are therefore interposed between the adjacent groups of segments and fit into the grooves 21 and cooperate therewith so as to draw the segments uniformly toward the metal roll 20 and to hold the same in position. The sloping lower faces of the grooves 21 and the cooperating sloping faces of the to substantially the marking surface of the roll so as to protect the ends of the same against accidental injury.

In the'form of the invention shown in Figures G, 7 and 8, and which constitute the preferred form of the inventioineach section of the roller consists of two separable semi-cir cular segments 30, Associated with each segment is a marking element 10 constructed in the same manner as that shown in Figure 5 and having its marking portion 11 of a length substantially coextensive with the outer semicylindrical face of each segment 30. A marking element 10 is associated with each of thesegments30 in substantially the same manner as described above inconnection with the description of the structure shown in Figure 1. Each marking elements is placed over the semicylindrical face of each segment so that themarking portion 11 thereof coincides with that face and. the portions 13 which consist of bare wire mesh will bend over the longitudinal faces of the segments. These faces are each provided with a longitudinal groove 31 having several tapped recesses. These portions 13 are drawn tautly over the longitudinal faces of the. segments and clamping bars 32 are placed thereover and caused to clamp the portions 13 of the marking element within the grooves 31.

Screws33 serve to anchor the clamping bars 32 to the segments 30, these screwsentering the tapped recesses 31 and being-preferably flat headed screws which .fit into the countersunk apertures provided therefor in the anchoring or clamping bars '32. The longitudinal faces of the segments are additionally provided with longitudinal grooves 34 between the outer face of the segment and .9 the groove 31. \Vhen two such segments are assembled to form a section in the manner to be described hereinafter, a rod 35 is placed between the adjacent longitudinal faces of the segments in such a manner that as the two segments are clamped together, the rods will serve to additional] y tension the marking unit 10, thereby assuring the maintenance of the marking elements 10 in a firmly taut relationship to the segments 30.

Each section comprises a pair of cooperating segments which, while they vary somewhat from each other in specific structural detail, as is clearly apparent from the drawings, these segments ari substantially identical in construction. Each segment is provided with the hub portion 36 and with a concentric semicylindrical portion 37 which receives the marking element 10; the two portions being connected together by the integral transverse wall 38 disposed approximately midway of the ends of the segment.

Each of the segments is additionally provided with the walls 39 which extend the entire length of the segment.

After each segment is assembled with its corresponding marking element 10, as described above, a pair of segments are associated together for the purpose of forming a section. Dowel pins 40 are provided for the purpose of aiding in the proper assembly of a pair of segments and threaded bolts 41 passing through a bore 42 in the wall 39 in the upper segment and a cooperating interiorly threaded passage -13 in the corresponding wall 39 of the lower segment serve to hold the two segments in assembled relation. As was pointed out above, prior to the assembly of the two segments into a section, the rods 35 are properly placed between the segments so as to subject the marking elements 10 to the proper tensioning during this assembly operation.

The upper segment 30 is preferably provided with a pair of longitudinal kcyways 44:. as shown. The shaft 45 upon which the series of sections are assembled, as shown in Figure 6, is provided with a key 46 adapted to cooperate with one of the keyways 4-1. In assembling a series of such sections on the shaft 45, the adjacent sections may be so disposed thereon that the keyways 4-1 are alternated, or so that one section is placed in such a manner as to utilize one of said keyways whereas the other section may be placed in such a manner as to utilize the other of the keyways.

The end faces of the outer semicylimlriiail walls 37 of each of the segments are provided with cut-out shoulders. One end face is provided with an annular cut-out shouldcr 47 interiorly thereof, whereas the other end face is provided with an annular cut-out shoulder 48 of its outer circumferemte; the result being that when a series of sections are assembled on the shaft, as shown in Figure (3, the adjacent sections interiit and interlock into each other, the projecting annular portion formed by the cut-out 47 fitting over the projecting annular portion formed by the cut-out 48.

Each of the walls 38 is provided with a pair of passages 45) which receive the bolting or clamping rods .30 passing through the whole series of segments or sections and through the end plates 51 and 512. Each of the end plates has an exterior diameter identical with the exterior diameter of the marking elements 10 so that the outer edge of the end plates serves to protect the marking elements 10 against possible injury. plate 51 is constructed so that it cooperates with the cut-out portion 47 and fits there into while the end plate 52 is constructed to cooperate with the cut-out 48. Collars 53 are associated with the sha ft so as to hold the end plates of the entire assembly against endwise movement.

It will be seen from the above that by means of the apparatus shown herein, a marking roll is provided whichis adapted to cooperate with a paper web and may be utilized for the purpose of applying a water mark or the like to substantially the entire. surface of the paper in the process of its manufacture. The roll when completely assembled has an operating face of resilient mat rial such as rubber, this face bearing the dvrr d marks or insignia. The large numbei oi marking elements 10 may, if desired, be duplicates of each other and merely repeat a mark or de sign over the web. If, however. it becomes necessary to apply more than one mark or design to a web in the process of manufacture, it is apparent that the units 10 may be varied and the mark or design carried thereby may be varied. If desired, this apparatus may be utilized for applying a pattern, mark or design to the paper.

It is found that the best results are obtaincd when the layer of rubber 11 is made of semi-hard vulcanized rubber which is substantially uniform in its hardness and consistency, throughout its cross section. if desired, however, the rubber 11 may consist of the marking face of semi-hard and vulcanized rubber and may have a layer of softer rubber interposed between the marking layer and the wire cloth.

Because of the use of semi-hard rubber the surface of the marking roll adapts itself to any unevenness which may exist in the surface of the drier or other roll with which the marking roll cooperates, so that theytcrmarking impression produced is relatively uniform throughout. Moreover. the semi-hard surface of the marking roll does not weaken the fibre of the paper as is the case with the hard types of marking roll heretofore in use and the marking surfacc itself does not wear out in any high spots that may exist. Furthermore, because of the flexibility of the wire mesh, each mark ing element may be underlaid by shims and the like to bring it up in such spots as may The end be necessary to produce a uniform impression.

\Vhile as shown each marking element 10 contains a body of rubber which is coextensive with the outer face of its cooperating segment, it will be understood, however, that this may be varied as desired. In the present embodiment it is preferred that the finally assembled marking roll should have an operating face made entirely of resilient material such as rubber, nevertheless, the amount of marking surface carried by each marking element 10 may be varied and may be made substantially less than the face of the segment.

The manner in which this apparatus is utilized in cooperation with a paper making machine may be varied in manners well known to those skilled in the art. The preferred manner of utilizing this marking roll, howe er, is to dispose the same in cooperation with a drier drum and preferably at such a point where the paper web had not yet been completely dried. The specific point in the machine at which this roll is utilized depends upon the nature of the mark desired.

I claim:

1. ater marking equipment, comprising a roll having a layer of rubber over substan tially its entire outer surface, said layer having the desired markings formed thereon, said layer consisting of a plurality of removable and replaceable independent segments, and means covered by the segments for securing the segments to the rolls in substantially contiguous relation.

2. Water marking equipment comprising a roll having a layer of yieldable resilient material over substantialy its entire outer surface, said layer having the desired markings formed thereon, and consisting of a puralitiv of removable and replaceable, independent segments, and means interfitting with a jacent segments and covered by them for securing the segments upon the roll in substantially contiguous relation, independently of direct attachment to the roll.

3. ater marking equipment comprising a roll having a layer of vulcanized rubber over its entire outer surface, said layer having the desired marking formed thereon, and consisting of a plurality of removable and replaceable independent segments, and each segment having associated therewith a reinforcing fabric tensioned circumferentially and received and anchored at its ends in the end edges of the segment.

4. \Vater marking equipment comprising a roll having a layer of vulcanized rubber over its entire surface, said layer having the desired markings formed thereon and consisting of a plurality of removable independent segments, and a wire fabric reinforcing element for each segment tensioned circumferentially and received and anchored at its ends in the end edges of the segment.

5. Water marking equipment comprising a roll having a marking surface of yieldable resilient vulcanized rubber and comprising a plurality of marking segments, each segment consisting of a nonstretchable reinforcing fabric and a layer of rubber vulcanized thereon and having the desired marking formed thereon, and means covered by the segments for removably anchoring said segments on said roll.

6. In combination, a metal roll, a circular plate mounted on each end of the roll and extending beyond the periphery thereof, a plurality of cylindrical segments carried by said roll between said plates, longitudinally and circumferentially of the roll, said segments having tapered grooves in their arcuate ends, means cooperating with said grooves to clamp and retain said segments on said roll, and a removable marking element comprising a flexible wire cloth and a body of rubber substantially coextensive with the area of the segment carried by said segment.

7. In combination, a metal roll, a plurality of metal segments carried by said roll, means disposed between and cooperating with 1ongitudinally adjacent segments to retain said segments on said roll, a retaining plate fixedly mounted on each end of the roll and a removable marking element having a marking surface substantially coextensive with the area of the segment mounted on each segment.

8. In combination, a metal roll, a plurality of arcuate metal members carried by said roll, said members being disposed in longitudinal] y disposed groups, each group covering the roll circumferentially, means disposed between adjacent groups and cooperating therewith to retain said members on said roll, a retaining ring fixedly mounted on each end of the roll, each member carrying a removable marking element, comprising a flexible nonstretchable fabric and a body of resilient material carrying a marking surface substantially coextensive with the area of the member, and means for clamping said marking element on said member whereby said marking surface covers substantially the entire area of the roll.

9. In combination, a metal roll, a plurality of arcuate metal members carried by said roll, said members being disposed in longitudinally disposed groups, each group covering the roll circumferentially, the ends of said plates being provided with arcuate tapered grooves forming in each group a circular tapered groove concentric with said roll, a retaining ring disposed between adjacent groups having tapered faces cooperating with said grooves to retain said members on said roll, a retaining ring fixedly mounted on each end of the roll to cooperate with the groove on the end group, each member carrying a removable marking clement, comprising a flexible wire cloth and a body of rubber vulcanized thereon and carrying a marking surface, the body of rubber being substantial- 1y coextensive with the area of the member, the cloth extending therefrom, and onto the sides of the member, the sides of the member being provided with grooves to receive the cloth, and a clamping bar disposed in said groove to fix the cloth, whereby said marking surface covers substantially the entire area of the roll.

10. In an apparatus of the type described, the combination of a cylindrical segment having a groove in each of its opposed longitudinal edges, a sheet of nonstretchable fabric disposed on the cylindrical face of said segment and having end portions disposed within said grooves, a clamping bar in each of said grooves to clamp said sheet in position, and a layer of yieldable resilient material having desired markings formed thereon carried by said fabric, said layer having an area coextensive with the outer cylindrical area of the segment.

11. In an apparatus of the class described, the combination of a cylindrical segment, a sheet of nonstretchable fabric disposed on the cylindrical face of said segment and extending over the longitudinal edges of said segment, means for anchoring said fabric on said edges, and a layer of resilient material having the desired markings formed thereon carried by said fabric, said segment having a tapered annular groove in each arcuate end.

12. In an apparatus of the type described, the combination of a cylindrical segment, a sheet of nonstretchable fabric disposed on the face of said segment, said segment having a groove in each longitudinal edge, clamping bars disposed within said grooves to clamp said fabric in position, and a layer of yieldable vulcanized rubber having desired markings formed thereon, carried by said fabric, said segment also having an annular groove in each arcuate edge, said annular grooves being out of alignment with said first mentioned grooves.

13. In an apparatus of the class described, the combination of a shaft, a plurality of cylindrical sections disposed longitudinally of said roll, and means for clamping said sections to each other and to the shaft, each of said sections comprising a pair of cooperating segments having a pair of superposed faces, each segment carrying a removable marking element having anchoring por tions overlapping said faces, means carried by said faces for anchoring said onions, and means disposed between said aces for tensioning said elements.

14. The apparatus recited in claim 13 in which the last named means comprises a rod disposedv between the said superposed faces.

15. A sectional paper marking roll comprising a shaft, a plurality of removable sections carried thereby, each section comprising a pair of segments, each segment carrying a removable paper marking element, means for anchoring said element in said segment, and means for associating a pair of segments to form a section.

16. A sectional paper marking roll for cooperation with a paper making machine to impress a mark on the web of paper before its drying has been completed, comprising a shaft and a plurality of axially removable sections keyed to said shaft, each section comprising a plurality of attached segments and each segment carrying a marking element.

17. A sectional paper marking roll for cooperation with a paper making machine to impress a mark on the web of paper before its drying has been completed, comprising a shaft and a plurality of axially re movable sect-ions keyed to said shaft, each section comprising a plurality of attached segments and each segment carrying a re movable flexible marking element.

18. A sectional paper marking roll for cooperation with a paper making machine to impress a mark on the web of paper before its drying has been completed, comprising a shaft and a plurality of axially removable sections keyed to said shaft, each section comprising a plurality of segments, each segment carrying a removable flexible, paper marking element, means for anchoring each element to the segment, and means cooperating with a pairof adjacent segments to tension said element.

19. A sectional paper marking roll for cooperation with a paper making machine to impress a mark on the web of paper before its drying has been completed, comprising a shaft and a plurality of axially removable sections keyed to said shaft, each section comprising a plurality of cylindrical segments, means for clamping said segments to form a section, each pair of adjacent segments having a pair of superposed faces, a removable flexible marking element carried by each segment, means for anchoring said element carried by each of said faces, each of said faces having a longitudinal groove disposed between said anchoring means and the outer edge of said face, and a rod disposed between said grooves to tension the marking element.

In testimony whereof I have affixed my signature to this specification.

WILLIS J. PIPPERT. 

